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30231430 = 2523131441
BaseRepresentation
bin111001101010…
…0101110000110
32002212220201121
41303110232012
530214401210
62555544154
7514651165
oct163245606
962786647
1030231430
1116079359
12a15b05a
136356428
14402d3dc
1529c26da
hex1cd4b86

30231430 has 16 divisors (see below), whose sum is σ = 56782944. Its totient is φ = 11566720.

The previous prime is 30231403. The next prime is 30231433. The reversal of 30231430 is 3413203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30231433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65491 + ... + 65950.

It is an arithmetic number, because the mean of its divisors is an integer number (3548934).

Almost surely, 230231430 is an apocalyptic number.

30231430 is a deficient number, since it is larger than the sum of its proper divisors (26551514).

30231430 is a wasteful number, since it uses less digits than its factorization.

30231430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 131471.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 30231430 is about 5498.3115590152. The cubic root of 30231430 is about 311.5202123288.

Adding to 30231430 its reverse (3413203), we get a palindrome (33644633).

The spelling of 30231430 in words is "thirty million, two hundred thirty-one thousand, four hundred thirty".

Divisors: 1 2 5 10 23 46 115 230 131441 262882 657205 1314410 3023143 6046286 15115715 30231430